- DL Case Studies: NHSE, UCSTRI, WATERS, LTRS, NTRSS, NCSTRL,
NACA, CORE, ADS, JSTOR, DeLIver
- M. VanHeyningen, "The Unified Computer Science Technical Report Index:
Lessons in Indexing Diverse Resources," Proceedings of the 2nd
International World Wide Web Conference, October 19-21, 1994, pp. 535-543.
This paper documents the development of the UCSTRI system. UCSTRI was
interesting in that it was an early effort that provided a surprisingly good
search interface to a collection of anonymous FTP servers. The key is
that the anonymous FTP sites did nothing to participate in UCSTRI; their
contents were cataloged and heuristics applied to guess the formats, etc.
This is a DL equivalent of current meta-searchers like Altavista, Infoseek
- M. Nelson and M.-H. Maa, "Optimizing the NASA Technical Report Server,"
Internet Research, 6(1), 1996, pp. 64-70.
This paper gives an overview of some architectural improvements in NTRS,
most notably integrating parallel searching. NTRS is a gateway to 15+
different DLs, and requires the remote sites to meet a minimal requirement
for participation (in contrast to UCSTRI). Most of the individual nodes
in NTRS are are of the hybrid http/ftp server variety discussed in the
- J. Davis and C. Lagoze, "The Networked Computer Science Technical Report
Library," Cornell CS TR96-1595, July, 1996.
This paper gives an overview of NCSTRL and the protocol that it is built
upon, Dienst. NCSTRL follows the independent, distributed publisher model
similar to DLs discussed in the above papers, but differs in that it
requires the installation of a sophisticated suite of software for
publication management, indexing, and serving. NCSTRL has 100+
participants, and Dienst is probably the most sophisticated and rich WWW
DL system in widespread use.
Michael L. Nelson, A Digital Library for the National Advisory
Committee for Aeronautics, NASA/TM-1999-209127, April 1999.
A summary of the NACA project, documenting the lessons and technologies
that would eventually evolve into "buckets".
Guthrie, Kevin M. "JSTOR: The Development of a Cost-Driven, Value-Based
Pricing Model." Scholarly Communication and Technology Conference,
Emory University, April 24-25, 1997.
- Guthrie, Kevin M. "JSTOR: From Project to Independent Organization." D-Lib Magazine. July/August 1997.
These two readings give a good overview of the JSTOR project, both in
its origins and goals, and its current operating status. JSTOR is
especially unique in its status as an independent, self-supporting DL.
- A. Accomazzi, G. Eichhorn, M. J. Kurtz, C. S. Grant, S. S. Murray,
"Astronomical Information Discovery and Access: Design and Implementation
of the ADS Bibliographic Services," Astronomical Data Analysis Software
and Systems VI, Vol. 125, 1997, pp. 357-360.
This short paper discusses how the Astrophysics Data Systems (ADS;
http://ads.harvard.edu) and its current acc
ess mechanisms to its holdings.
The ADS is a NASA funded effort that does a remarkable job of providing
access to abstracts, articles (in both scanned and native formats), and
datasets. You are highly encouraged to take a tour of this service.
- Hsinchun Chen, "Semantic Research for Digital Libraries", D-Lib Magazine
This is a more recent article that gives both a short review of the
system issues, but more importantly focuses on the higher level semantic
research made possible through the existence of the UIUC testbed.